Finding the Fourth Proportional to 386,921.64, 579,857.57 and 218,358.62
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Solution
The fourth proportional to 386,921.64, 579,857.57 and 218,358.62 is: 327,241.70
Step by Step Solution
- Step 1: Write the proportion equation
386,921.64 : 579,857.57 = 218,358.62 : x - Step 2: Convert to fraction form
386,921.64/579,857.57 = 218,358.62/x - Step 3: Cross multiply
386,921.64x = 579,857.57 × 218,358.62 - Step 4: Simplify right side
386,921.64x = 126,616,897,783.98 - Step 5: Solve for x
x = 126,616,897,783.98/386,921.64 - Step 6: Final answer
x = 327,241.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.